What did Spain do after the American Revolution to discourage American settlements west of the Appalachian Mountains?

ASpain placed a heavy tariff on American-made goods.
BSpain went to war with the United States.
CSpain forbade American trade in New Orleans.
DSpain attacked American ships at sea.

Verified Answer :

The answer is letter C. New
Orleans is one of the territories that Spain had acquired from France,
alongside Louisiana. They have the American settlers in the area to trade in Appalachian
Mountain in order to maintain peace between the Americans and the American
Indians living in the area